WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
I have a question about the following tube, 8624: What is the average Heater-to-Cathode voltage, and what is the heater or filament current? Or even better;
a datasheet on this one?